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Game-Theoretic Analysis of Cooperation Incentive Strategies in Mobile Ad Hoc Networks

Platform : java

IEEE Projects Years : 2012 - 13

Game-Theoretic Analysis of Cooperation Incentive Strategies in Mobile Ad Hoc Networks

 

ABSTRACT:

 

 

 

In mobile ad hoc networks (MANETs), tasks are conducted based on the cooperation of nodes in the networks. However, since the nodes are usually constrained by limited computation resources, selfish nodes may refuse to be cooperative. Reputation systems and price-based systems are two main solutions to the node non-cooperation problem. A reputation system evaluates node behaviors by reputation values and uses a reputation threshold to distinguish trustworthy nodes and untrustworthy nodes. A price-based system uses virtual cash to control the transactions of a packet forwarding service. Although these two kinds of systems have been widely used, very little research has been devoted to investigating the effectiveness of the node cooperation incentives provided by the systems. we use game theory to analyze the cooperation incentives provided by these two systems and by a system with no cooperation incentive strategy. We find that the strategies of using a threshold to determine the trustworthiness of a node in the reputation system and of rewarding cooperative nodes in the price based system may be manipulated by clever or wealthy but selfish nodes. Illumined by the investigation results, we propose and study an integrated system. Theoretical and simulation results show the superiority of the integrated system over an individual reputation system and a price-based system in terms of the effectiveness of cooperation incentives and selfish node detection.

 

 

 

EXISTING SYSTEM:

 

In Existing two techniques are followed for making the selfish node as the cooperative node and the techniques are Reputation systems and A price-based system.

 

Reputation System:

 

Reputation systems and price-based systems are two main solutions to the node non-cooperation problem. A reputation system evaluates node behaviors by reputation values and uses a reputation threshold to distinguish trustworthy nodes and untrustworthy nodes.

 

A price based systems:

 

A price-based system uses virtual cash to control the transactions of a packet forwarding service. Although these two kinds of systems have been widely used.

 

Disadvantage:

 

Very little research has been devoted to investigating the effectiveness of the node cooperation incentives provided by the systems

 

The techniques used in the Existing system are not efficient it would not convert the entire selfish node into cooperative node.

 

Proposed System:

 

In proposed system we use game theory to analyze the cooperation incentives provided by these two systems and by a system with no cooperation incentive strategy. We find that the strategies of using a threshold to determine the trustworthiness of a node

 

in the reputation system and of rewarding cooperative nodes in the price based system may be manipulated by clever or wealthy but selfish nodes.

 

Hardware Requirements:

 

  • System                 : Pentium IV 2.4 GHz.
  • Hard Disk            : 40 GB.
  • Monitor                : 15 VGA Colour.
  • Mouse                  : Logitech.
  • Ram                     : 256 Mb.

 

Software Requirements:

 

  • Operating system           : - Windows XP Professional.
  • Back End             : - MS Sql Server 2000
  • Coding Language : - JAVA
  • Tool used             : -NetBeans

 

MODULES:

 

IDENTIFYING THE NODES

 

   In this module the mobile node that move to the foreign network will find the nodes available nodes in the foreign network. When the mobile node come to the foreign network the foreign network will send the details about the available nodes in the network.

 

IDENTIFING SELFISH NODE

 

In this module the mobile node will give request to the all-available nodes given by the foreign network and by getting the reply from the available nodes the mobile will classify the cooperative nodes and the selfish node

 

TRANSFERING DATA:

 

In this module the mobile node would send the data to the cooperative node in the foreign network and the cooperative node will send the data to the client in the home network of the sending mobile node

 

 

 

TECHNIQUES USED:

 

Reputation Systems.

 

 Reputation systems and price-based systems are two main approaches proposed to encourage cooperation between mobile nodes in MANETs. A reputation system gathers observations of node behaviors and calculates node reputation values. The system detects and punishes low reputed nodes by isolating them from the MANETs.

 

 

 

There are two types of reputation systems: first-hand based and secondhand based.

 

 

 

v  In the first-hand based reputation systems, a node only believes its own observations about other nodes’ behaviors, and the exchanges of reputation information between nodes are disallowed.

 

 

 

v  In the second-hand reputation systems, nodes share observations of node behaviors by periodically exchanging observed information.

 

 

 

 

 

 

 

Price-based Systems.

 

            In the price-based systems, nodes are paid for offering packet forwarding service and pay for receiving forwarding service. The payments can be in money, stamps, points or similar objects of value. Price-based systems treat packet forwarding services as transactions that can be priced and introduce virtual credits to manage the transactions between nodes. A service receiver pays virtual credits to a service provider that offers packet forwarding.

 

 



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